<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style type="text/css">
	input{
		width: 280px;
		height: 30px;
		background: url("serch.jpg") no-repeat right ;
	}
	</style>
</head>
<body>
	<input type="text" value="请输入关键字">
</body>
</html>